151 citations · 166 across the 5 of their papers we have counts for
7 papers
Mechanical First Law of Black Hole Spacetimes with Cosmological Constant and Its Application to Schwarzschild-de Sitter Spacetime
Miho Urano, Akira Tomimatsu, Hiromi Saida
The mechanical first law (MFL) of black hole spacetimes is a geometrical relation which relates variations of mass parameter and horizon area. While it is well known that the MFL o…
Constraints on the Evolution of Black Hole Spin due to Magnetohydrodynamic Accretion
Masaaki Takahashi, Akira Tomimatsu
Stationary and axisymmetric ideal magnetohydrodynamic (MHD) accretion onto a black hole is studied analytically. The accreting plasma ejected from a plasma source with low velocity…
Breakdown of self-similar evolution in homogeneous perfect fluid collapse
Eiji Mitsuda, Akira Tomimatsu
The stability analysis of self-similar solutions is an important approach to confirm whether they act as an attractor in general non-self-similar gravitational collapse. Assuming t…
Stability analysis of self-similar behaviors in perfect fluid gravitational collapse
Eiji Mitsuda, Akira Tomimatsu
Stability of self-similar solutions for gravitational collapse is an important problem to be investigated from the perspectives of their nature as an attractor, critical phenomena…
Distortion of Schwarzschild-anti-de Sitter black holes to black strings
A. Tomimatsu
Motivated by the existence of black holes with various topologies in four-dimensional spacetimes with a negative cosmological constant, we study axisymmetric static solutions descr…
Electromagnetic radiation due to naked singularity formation in self-similar gravitational collapse
Eiji Mitsuda, Hirotaka Yoshino, Akira Tomimatsu
Dynamical evolution of test fields in background geometry with a naked singularity is an important problem relevant to the Cauchy horizon instability and the observational signatur…